<template>
  <div class="dashboard-container">
    <div class="app-container">
      <!-- 引用全局注册的组件 -->
      <PageTools :show-before="true">
        <!-- 左侧显示总记录数 -->
        <span slot="before">共{{ page.total }}条记录</span>
        <!-- 右侧显示按钮  -->
        <template #after>
          <el-button size="small"
                     type="warning"
                     @click="$router.push('/import')">导入excel</el-button>
          <el-button size="small"
                     type="danger"
                     @click="exportData">导出excel</el-button>
          <el-button icon="plus"
                     size="small"
                     type="primary"
                     @click="showDialog = true">新增员工</el-button>
        </template>
      </PageTools>
      <!-- 放置表格-->
      <el-card v-loading="loading">
        <el-table border
                  :data="list">
          <!-- 表格中使用 type="index" 显示序号 -->
          <el-table-column label="序号"
                           sortable=""
                           type="index" />
          <el-table-column label="姓名"
                           sortable=""
                           prop="username" />
          <el-table-column label="头像"
                           align="center">
            <!-- 插槽 -->
            <template v-slot="{ row }">
              <img v-imagerror="require('@/assets/common/head.jpg')"
                   :src="row.staffPhoto"
                   style="border-radius: 50%; width: 100px; height: 100px; padding: 10px"
                   alt=""
                   @click="showQrCode(row.staffPhoto)">
            </template>
          </el-table-column>
          <el-table-column label="工号"
                           sortable=""
                           prop="workNumber" />
          <el-table-column label="聘用形式"
                           sortable=""
                           prop="formOfEmployment"
                           :formatter="formatEmployment" />
          <el-table-column label="部门"
                           sortable=""
                           prop="departmentName" />
          <!-- 作用域插槽 + 过滤器 -->
          <el-table-column label="入职时间"
                           sortable=""
                           prop="timeOfEntry">
            <!-- <template slot-scope="obj"></template> -->
            <template v-slot="{ row }">
              {{ row.timeOfEntry | formatDate }}
            </template>
          </el-table-column>
          <el-table-column label="账户状态"
                           sortable=""
                           prop="enableState">
            <template v-slot="{ row }">
              <el-switch :value="row.enableState === 1" />
            </template>
          </el-table-column>
          <el-table-column label="操作"
                           sortable=""
                           fixed="right"
                           width="280">
            <template slot-scope="{ row }">
              <!-- <el-button :disabled="!checkPermission('POINT-USER-UPDATE')"
                         type="text"
                         size="small"
                         @click="$router.push(`/employees/detail/${row.id}`)">查看
              </el-button> -->
              <el-button type="text"
                         size="small"
                         @click="$router.push(`/employees/detail/${row.id}`)">查看
              </el-button>
              <el-button type="text"
                         size="small">转正</el-button>
              <el-button type="text"
                         size="small">调岗</el-button>
              <el-button type="text"
                         size="small">离职</el-button>
              <el-button type="text"
                         size="small"
                         @click="editRole(row.id)">角色</el-button>
              <el-button type="text"
                         size="small"
                         @click="deleteEmployee(row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
        <!-- 放置分页 -->
        <el-row type="flex"
                justify="center"
                align="middle"
                style="height:60px">
          <el-pagination :current-page="page.page"
                         :page-size="page.size"
                         :total="page.total"
                         layout="prev, pager, next"
                         @current-change="changePage" />
        </el-row>
      </el-card>
      <!-- 放置新增组件 -->
      <addEmployee :show-dialog.sync="showDialog" />
      <el-dialog title="二维码"
                 :visible.sync="showCodeDialog">
        <el-row type="flex"
                justify="center">
          <canvas ref="myCanvas" />
        </el-row>
      </el-dialog>
      <!-- 放置角色组件 -->
      <assignRole ref="assignRole"
                  :show-role-dialog.sync="showRoleDialog"
                  :user-id="userId" />
    </div>
  </div>
</template>

<script>

import { getEmployeeList, delEmployee } from '@/api/employees'
import EmployeeEnum from '@/api/constant/employees' // 引入员工的枚举对象
import addEmployee from './components/add-employee.vue'
import { formatDate } from '@/filters'
import QrCode from 'qrcode'
import assignRole from './components/assign-role.vue'
export default {
  components: {
    addEmployee, assignRole
  },
  data () {
    return {
      loading: false, // 定义遮罩层
      list: [], // 接收数组
      page: {
        page: 1, // 页码
        size: 10, // 每页条数
        total: 0 // 总数
      },
      showDialog: false, // 定义新增弹层的显示隐藏
      showCodeDialog: false, // 定义二维码弹层的显示隐藏
      showRoleDialog: false, // 显示分配角色的弹层
      userId: null
    }
  },
  created () {
    this.getEmployeeList()
  },
  methods: {
    async getEmployeeList () {
      this.loading = true
      const { total, rows } = await getEmployeeList(this.page)
      this.page.total = total
      this.list = rows
      this.loading = false
    },
    // newPage是最新的页码
    changePage (newPage) {
      this.page.page = newPage // 把最新页码赋值
      this.getEmployeeList() // 重新拉取数据
    },
    // 格式化聘用形式
    formatEmployment (row, column, cellValue, index) {
      // 要去找 1所对应的值
      const obj = EmployeeEnum.hireType.find(item => item.id === cellValue)
      return obj ? obj.value : '未知'
    },
    // 删除员工
    async deleteEmployee (id) {
      try {
        await this.$confirm('确定删除该员工吗')
        await delEmployee(id)
        this.getEmployeeList() // 重新拉取数据
        this.$message.success('删除成功')
      } catch (error) {
        console.log(error)
      }
    },
    exportData () {
      const headers = {
        '姓名': 'username',
        '手机号': 'mobile',
        '入职日期': 'timeOfEntry',
        '聘用形式': 'formOfEmployment',
        '转正日期': 'correctionTime',
        '工号': 'workNumber',
        '部门': 'departmentName'
      }
      // 导出excel
      import('@/vendor/Export2Excel').then(async excel => {
        // excel是引入文件的导出对象
        // 导出 header从哪来
        // data 从哪来
        const { rows } = await getEmployeeList({ page: 1, size: this.page.total })
        const data = this.formatJson(headers, rows) // 返回的data就是要导出的结构
        const multiHeader = [['姓名', '描述信息', '', '', '', '', '部门']]
        const merges = ['A1:A2', 'B1: F1', 'G1: G2']
        excel.export_json_to_excel({
          header: Object.keys(headers),
          data,
          filename: '员工薪资表',
          multiHeader, // 复杂表头
          merges// 合并选项
        })

        // excel.export_json_to_excel({
        //   header: ['姓名', '工资'],
        //   data: [['我', 10000], ['你', 2000]],
        //   filename: '员工工资表'
        // })
        // [{username:'张三',mobile:13912345678}] => [[]]
        // 要转化 数据结构 还要和表头的顺序对应上
        // 要求转出的标题是中文
      })
    },
    // 将表头数据和数据进行对应
    // [{}] => [[]]
    formatJson (headers, rows) {
      return rows.map(item => {
        // item是一个对象 { mobile:13255,username:'张三' }
        // Object.keys(headers) 值为  ["手机号","姓名","入职日期"]
        return Object.keys(headers).map(key => {
          // 需要判断字段
          if (headers[key] === 'timeOfEntry' || headers[key] === 'correctionTime') {
            // 格式化日期
            return formatDate(item[headers[key]])
          } else if (headers[key] === 'formOfEmployment') {
            const obj = EmployeeEnum.hireType.find(obj => obj.id === item[headers[key]])
            return obj ? obj.value : '未知'
          }
          return item[headers[key]]
        })
        // item[headers[key]] 值为  ['13255','张三','','']
      })
      // return rows.map(item => Object.keys(headers).map(key => item[headers[key]]))
      // 需要处理时间格式问题
    },
    showQrCode (url) {
      // url存在的情况下 才弹出层
      if (url) {
        this.showCodeDialog = true // 数据更新了 但是我的弹层会立刻出现吗 ？页面的渲染是异步的！！！！
        // 有一个方法可以在上一次数据更新完毕，页面渲染完毕之后执行
        this.$nextTick(() => {
          // 此时可以确认已经有ref对象了
          QrCode.toCanvas(this.$refs.myCanvas, url) // 将地址转化成二维码
          // 如果转化的二维码后面信息 是一个地址的话 就会跳转到该地址 如果不是地址就会显示内容
        })
      } else {
        this.$message.warning('该用户还未上传头像！')
      }
    },
    async editRole (id) {
      this.userId = id // props传值 是异步的
      await this.$refs.assignRole.getUserDetailById(id) // 父组件调用子组件方法 异步方法
      this.showRoleDialog = true
    }
  }
}
</script>

<style>
</style>
